參數(shù)資料
型號: WJLXT972MLC.A4SE001
廠商: CORTINA SYSTEMS INC
元件分類: 網(wǎng)絡(luò)接口
英文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP48
封裝: LEAD FREE, LQFP-48
文件頁數(shù): 58/94頁
文件大?。?/td> 1235K
代理商: WJLXT972MLC.A4SE001
Intel
LXT972M Single-Port 10/100 Mbps PHY Transceiver
61
Document Number: 302875-004
Revision Date: February 18, 2005
Figure 21 shows the LXT972M Transceiver in a typical twisted-pair interface, with the RJ-45
connections configured for a NIC application.
Figure 21. Intel
LXT972M Transceiver Typical Twisted-Pair Interface - NIC
1. Center tap current may be supplied from 3.3 V VCCA as shown. Additional power savings may be
realized by supplying the center tap from a 2.5 V current source. A separate ferrite bead (rated at 50
mA) should be used to supply center-tap current.
2. The 100
transmit load termination resistor typically required is integrated in the LXT972M
Transceiver.
3. Magnetics without a receive pair center tap do not require a 2 kV termination.
4. RJ-45 connections shown for standard NIC. TX/RX crossover may be required for repeater and
switch applications.
TPIP
TPIN
* = 0.001
F / 2.0 kV
To
Tw
is
te
d
-Pa
ir
N
e
tw
o
rk
1:1
Intel
LXT972M
Transceiver
1:1
1
TPOP
TPON
VCCA
GND
0.1
F
.01
F
2
270 pF 5%
0.01
F
50
1%
50
1%
**
3
SD/TP_L
6
3
8
7
5
4
1
2
50
50
50
RJ-45
50
50
50
4
0.1
F
B3513-01
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